<?php
echo 123+5000,"\n";
echo 18/5,"\n";
echo 18%5,"\n";
echo @(18.9%5.1),"\n";
echo 3**2,"\n";
//优先级及结合性
echo 5-2*6,"\n";
echo (-3)**2,"\n";
echo 8/2*3,"\n";
//不同类型间的数据计算
echo "100000"+234,"\n";
echo 234+"100000","\n";
echo "100000"+'234',"\n";
echo "100000"+'0o234',"\n";
echo "100000"+'0x2A',"\n";
echo "100000"+'123aaa',"\n";
echo "100000"+'-2e2aaa',"\n";
//浮点数
echo 3.14,"\n";
echo 3.14e5,"\n";
//echo 0o12.34,"\n";
echo fmod(18.9,5.1),"\n";
